Late Palaeozoic magmatism of Northern Taimyr

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Late Palaeozoic magmatism of Northern Taimyr : new insights into the tectonic evolution of the Russian High Arctic. / Kurapov, Mikhail ; Ershova, Victoria ; Khudoley, Andrei; Luchitskaya, Marina; Makariev, Alexander; Makarieva, Elena; Vishnevskaya, Irina.

In: International Geology Review, 23.09.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{30fa6b5a9e5d4329a148cfd82582177e,

title = "Late Palaeozoic magmatism of Northern Taimyr: new insights into the tectonic evolution of the Russian High Arctic",

abstract = "We report new results of a comprehensive study into Carboniferous–Early Permian granite magmatism of the northern Taimyr Peninsula, Russia (southern part of the Kara Terrane). U-Pb zircon ages (SHRIMP and LA–ICP–MS) represent the crystallization ages of these intrusions and range from ca. 344.5 to 288.4 Ma, defining the onset of granite magmatism during the Early Carboniferous (Visean; ca. 344 Ma) and its termination in the Early Permian (Artinskian; ca. 288 Ma). Ar-Ar dating of micas and amphiboles indicates that Late Palaeozoic tectonic activity in northern Taimyr ceased during the Middle Permian (Roadian; ca. 272 Ma). Rb/Sr and Sm/Nd isotopic data from the same intrusions, show initial (87Sr/86Sr)i ratios of between 0.70288 and 0.71027, with εNd(t) values range between −3.3 and +3.1. The combined geochemical and isotopic compositions of the granites describe an affinity to peraluminous I-type granites, probably formed in an Andean-type active continental margin setting. Our new geochemical, isotopic, and geochronological data indicate the existence of a long-lived (ca. 56 Myr) Andean-type active continental margin along the southern edge of the Kara Terrane during the Late Palaeozoic. Furthermore, our study reveals a causal relationship between Late Palaeozoic magmatism across northern Taimyr and closure of the Uralian Ocean.",

keywords = "active margin, granites, I-type granite, Kara Terrane, Northern Taimyr",

author = "Mikhail Kurapov and Victoria Ershova and Andrei Khudoley and Marina Luchitskaya and Alexander Makariev and Elena Makarieva and Irina Vishnevskaya",

year = "2020",

month = sep,

day = "23",

doi = "10.1080/00206814.2020.1818300",

language = "English",

journal = "International Geology Review",

issn = "0020-6814",

publisher = "Taylor & Francis",

}

RIS

TY - JOUR

T1 - Late Palaeozoic magmatism of Northern Taimyr

T2 - new insights into the tectonic evolution of the Russian High Arctic

AU - Kurapov, Mikhail

AU - Ershova, Victoria

AU - Khudoley, Andrei

AU - Luchitskaya, Marina

AU - Makariev, Alexander

AU - Makarieva, Elena

AU - Vishnevskaya, Irina

PY - 2020/9/23

Y1 - 2020/9/23

N2 - We report new results of a comprehensive study into Carboniferous–Early Permian granite magmatism of the northern Taimyr Peninsula, Russia (southern part of the Kara Terrane). U-Pb zircon ages (SHRIMP and LA–ICP–MS) represent the crystallization ages of these intrusions and range from ca. 344.5 to 288.4 Ma, defining the onset of granite magmatism during the Early Carboniferous (Visean; ca. 344 Ma) and its termination in the Early Permian (Artinskian; ca. 288 Ma). Ar-Ar dating of micas and amphiboles indicates that Late Palaeozoic tectonic activity in northern Taimyr ceased during the Middle Permian (Roadian; ca. 272 Ma). Rb/Sr and Sm/Nd isotopic data from the same intrusions, show initial (87Sr/86Sr)i ratios of between 0.70288 and 0.71027, with εNd(t) values range between −3.3 and +3.1. The combined geochemical and isotopic compositions of the granites describe an affinity to peraluminous I-type granites, probably formed in an Andean-type active continental margin setting. Our new geochemical, isotopic, and geochronological data indicate the existence of a long-lived (ca. 56 Myr) Andean-type active continental margin along the southern edge of the Kara Terrane during the Late Palaeozoic. Furthermore, our study reveals a causal relationship between Late Palaeozoic magmatism across northern Taimyr and closure of the Uralian Ocean.

AB - We report new results of a comprehensive study into Carboniferous–Early Permian granite magmatism of the northern Taimyr Peninsula, Russia (southern part of the Kara Terrane). U-Pb zircon ages (SHRIMP and LA–ICP–MS) represent the crystallization ages of these intrusions and range from ca. 344.5 to 288.4 Ma, defining the onset of granite magmatism during the Early Carboniferous (Visean; ca. 344 Ma) and its termination in the Early Permian (Artinskian; ca. 288 Ma). Ar-Ar dating of micas and amphiboles indicates that Late Palaeozoic tectonic activity in northern Taimyr ceased during the Middle Permian (Roadian; ca. 272 Ma). Rb/Sr and Sm/Nd isotopic data from the same intrusions, show initial (87Sr/86Sr)i ratios of between 0.70288 and 0.71027, with εNd(t) values range between −3.3 and +3.1. The combined geochemical and isotopic compositions of the granites describe an affinity to peraluminous I-type granites, probably formed in an Andean-type active continental margin setting. Our new geochemical, isotopic, and geochronological data indicate the existence of a long-lived (ca. 56 Myr) Andean-type active continental margin along the southern edge of the Kara Terrane during the Late Palaeozoic. Furthermore, our study reveals a causal relationship between Late Palaeozoic magmatism across northern Taimyr and closure of the Uralian Ocean.

KW - active margin

KW - granites

KW - I-type granite

KW - Kara Terrane

KW - Northern Taimyr

UR - http://www.scopus.com/inward/record.url?scp=85091304470&partnerID=8YFLogxK

U2 - 10.1080/00206814.2020.1818300

DO - 10.1080/00206814.2020.1818300

M3 - Article

AN - SCOPUS:85091304470

JO - International Geology Review

JF - International Geology Review

SN - 0020-6814

ER -

ID: 71822294

Late Palaeozoic magmatism of Northern Taimyr: new insights into the tectonic evolution of the Russian High Arctic

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